Labour has denied Jeremy Corbyn compared the actions of Israelis to those of the Nazis.

Amid a deepening anti-Semitism row, footage has emerged of the Labour leader mentioning the 1940s sieges of Leningrad and Stalingrad in a speech outside the Israeli embassy in London.

It comes as both Mr Corbyn and Labour face criticism over the party's controversial decision not to adopt an internationally recognised definition and working examples of anti-Semitism in full.

In a new party code of conduct, Labour has omitted four of the examples in the International Holocaust Remembrance Alliance's (IHRA) list. This includes comparing contemporary Israeli policies to those of the Nazis.

Labour says that while the examples are not reproduced word for word, they are covered. But, critics have questioned why they have not been adopted in full.

In a speech at a 2010 rally outside the Israeli embassy, Mr Corbyn told a crowd a "war crime" was being conducted in Gaza.

He said: "I was in Gaza three months ago. I saw the mortar shells that had gone through the school buildings, the destroyed UN establishments, the burnt-out schools, the ruined homes, the destroyed lives, the imprisoned people, the psychological damage to a whole generation who've been imprisoned for as long as the siege of Leningrad and Stalingrad took place.

"This is a war crime that is being undertaken, but this time on live television."

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A Labour spokesman insisted Mr Corbyn "was not comparing the actions of Nazis and Israelis but the conditions of civilian populations in besieged cities in wartime".

The Labour Against Anti-Semitism campaign group questioned whether Mr Corbyn would face action over the comments if his party adopted the IHRA examples in full.

Spokesperson Euan Philipps said: "The IHRA definition states that drawing comparisons of contemporary Israeli policy to that of the Nazis is anti-Semitic.

"It looks increasingly clear that if the IHRA definition were re-adopted by the Labour Party then Jeremy Corbyn might himself be suspended - and even face expulsion.

Momentum had been backing Mr Willsman as part of the so-called "JC9" group of Corbyn-supporting candidates at upcoming NEC elections, but will now no longer support him over the "deeply insensitive and inappropriate" comments.

Despite Momentum withdrawing their backing, Labour MP Chris Williamson, a former shadow minister and ally of Mr Corbyn, is continuing to support Mr Willsman's bid to remain on the NEC.

The Jewish Labour Movement, a formal affiliate of the Labour Party since 1920, on Thursday wrote to the party's chief whip Nick Brown calling for Mr Williamson to be "suspended indefinitely".

It follows the Derby North MP's appearance at a "Democracy Roadshow" event in Liverpool this week.

According to a Jewish Chronicle report of the meeting, Mr Williamson defended Labour activists who use language "perceived as anti-Semitic".

The newspaper also claimed Mr Williamson told an audience Labour was "wrong to take the action we did against Ken Livingstone", while he also allegedly failed to challenge an anti-Semitic trope used by another speaker at the event.